<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<script type="text/javascript">
		var a = 5, b = 6;
		A = a + b;
		a = A - a;
		b = A - b;
		alert(a);
		alert(b);
	</script>

</body>
</html>